Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

80 results about "Polyquaternium-7" patented technology

Polyquaternium-7 is an organic compound in the polyquaternium class of chemicals and used in the personal care industry. It is the copolymer of acrylamide and the quaternary ammonium salt diallyldimethylammonium chloride.

Preparation method of modified attapulgite particles and method for accelerating granulation of anaerobic sludge by modified attapulgite particles

The invention discloses a preparation method of modified attapulgite particles and a method for accelerating granulation of anaerobic sludge by the modified attapulgite particles and belongs to the technical field of water treatment. An anaerobic sludge blanket formed by anaerobic granular sludge and the modified attapulgite particles is formed at the bottom of a UASB (upflow anaerobic sludge blanket) reactor, attapulgite is granulated with sodium alginate after being modified with polyquaternium-7, then the modified attapulgite particles are fed into the anaerobic sludge, and the modified attapulgite particles account for 2%-5% of active volume of the UASB reactor; wastewater passes through the reactor from the bottom of the reactor from bottom to top, upward water flow and produced gas rise in the reactor, a better stirring effect is realized, and a suspended sludge layer is formed at the upper part of a sludge blanket reaction area. The modified attapulgite particles are added to active sludge, so that activity and flocculability of the sludge can be enhanced, content of extracellular polymeric substances of the active sludge is increased, the sludge granulation process is shortened, the removal rate of the reactor is increased, besides, the cost is lower, and the stability is good.
Owner:NANJING UNIV YIXING ENVIRONMENTAL PROTECTION RES INST +1
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products